Adapter for segmental abrasive wheels



Jan. 14, 1930. F. o. HOAGLAND ADAPTER FOR SEGMENTAL ABRASIVE WHEELSFiled 1926 0 INVENTUH By I I 1 I TORNEY Patented Jan. 14, 1930 UNITEDsnares earner erases FRANK O. HOAGLAND, OF BRIDGEPORT, CONNECTICUT;ASSIGNOR TO IPRATT & WHIT- NEY COMPANY, OF NEW YORK, N. Y., ACOBPOBATIGN F NEVTJEBISEY ADAPTER FOR SEGMENTAL ABRASIVE WHEELSApplication filed August 5, 1926. Serial No. 127,323.

within and retained within a chuck for abrasive segments in the samemanner and by the same means as the original abrasive segments.

WVith these and other objects in View, my invention consists in thefeatures of construction and operation set forth in the followingspecification and illustrated in the accompanying drawing.

In the accompanying drawing annexed hereto and forming a partof thisspecification, I have shown my invention embodied in a chuck forabrasive segments of the type shown in my copending application SerialNo. 127 ,322 filed August 5, 1926, but it is to be understood that theinvention can be otherwise embodied and that the drawing is not to beconstrued as defining or limiting the scope of the invention, the claimsappended to this specification being relied upon for that purpose.

In the drawing:

Figure 1 is a side elevation, partly broken away, and showing one of theadapter members in cross section.

Fig. 2 is a horizontal sectional view taken upon the line 2-2 of Fig. 1and looking in the direction of the arrows, and

Fig. 3 is a side elevation of one of the adapter members for theabrasive segments.

In the above mentioned drawing I have shown but one embodiment of theinvention which is now deemed preferable, but it is to be understoodthat changes and modifications may be made within the scope of theappended claims without departing from the spirit of the invention.

Briefly and in its broadest aspect, my'invention comprises the followingprincipal parts: First, a chuck similar in every respect to thatdisclosed in the above referred to application; and second, adaptermembers having their upper portions secured between bearing membersprovided in the chuck and having abrasive segments secured withinflanges provided on the lower portions of the adapter members.

Referring more in detail to the figures of the drawing, 1 show a chuckcomprising'a ring member 10 having an integral depending flange 11similar to that shown'and described in my copending application abovementioned. Bearing members 12 similar .to those in the above referred toapplication are provided within the internal surface of this dependingflange 11 and clamping members or strips 13 also having bearing members14 therein are adapted to engage the inner surface of the adaptermembers'15.

The adapter members 15 comprise a single integral body portion, thelower portions of which are formed with flanges 16 between which apartially worn abrasive segment 17 may be secured, as by means ofcement, sulphur, lead or other suitable retaining or adhesive member.The upper portions of the adapters 15 may be and preferably are arouatein form, the outer surface of which is curved to correspondapproximately to the radius of curvature of the internal surface of thedepending flange 11. The outer and inner walls of these portions of theadapter are concentric and cylindrical. As shown clearly in Fig. 2, thebearing members 12, which are adjustable similarly-to those in the abovereferred to application, are adapted to contact with portions of thisouter cylindrical or convex surface of the through the integral flange11. The bearing 7 members 14 are provided in these clamping strips 13 sopositioned that they engage adjacent ends of the concave cylindricalsurfaces of adjacent adapter members 15 substantially oppositecorresponding bearing members 12 on the integral flan e 11.

The adapter memiiers 15 are provided with reinforcing ribs 19 betweenthe inner and outer arcuate portions, these ribs 19 being disposed sothat they will extend between the bearing members 12 and 14 on theflange 11 and clamping strips13 respectively.

.At opposite ends of the adapter members 15 are suitably finished padsurfaces 20. These, as shown in Fig. 1, are disposed on the outer sideof the ada ter members when in operative position. hese pad surfaces 20,when the adapter members 15 are in operative position, engage the endsurface of the integral flange 11; .Inlthis manner the thrust oi thework against the segments .17 is taken up positively "by direct :contactbetween the members forming the chuck.

r In the use of abrasive wheels or chucks of this type, thesegmentsbecome worn to such an extent that they cannot be satisfactorilyretained withinthe chuck between the clamping members comprising :thebearing members 12 and clamping strips 13 shown. In

order to make use of these partially worn 1, elongated sufliciently toengage a substantial portion of the bearing members 12011 the integralflange 11 and also adapted to contact with the bearing members 14 on theclamping strips 13. With the abrasive segments 17 secured as shown, theymay be used until worn to a very short height, thus obtaining a greateramount of use out of the same dimensions of abrasive blocks.

What I claim is:

1. An abrasive wheel comprising in combination, a ring member havlng anintegral flange, adjustable bearing members positioned within saidflange, adapter members having abrasive segments secured therein, andclamping means to retain said adapter member in position against thebearing members in said flange.

' 2. An abrasive wheel comprising in combination, a ring member "havingan integral flange, adjustable bearing members positioned within saidflange, adapter members haviw abrasive segments secured therein,

its upper portions adapted to be secured internally curved surfaces onits upper por-.

tions adapted to engage the clamping means Within a chuck, and padsurfaces on the member adapted to contact with a surface of the chuck toresist the pressure of the work 7 during operation. p

In testimony whereof, I hereto ,aflix my signature. i

FRANK 'O. HOAGLAND.

clamping members having adjustable bear-' 7,

ing members there-in disposed oppositely to said first mentioned bearingmembers when in operative :position, and means to retain said clampingmembers in position.

3. An adapter for abrasive segments comprising a member having retainingflanges on its lower portions within which an abrasive segmentmay besecured and concentric external and internal cylindrical surfaces on

